Pronunciation: [kˈɒstɪɡən] (IPA) 
Costigan is a surname, pronounced as /ˈkɑstɪɡən/. The word has three syllables and is phonetically spelled as KAH-sti-guhn. The first syllable is pronounced with an open back unrounded vowel sound /ɑ/, while the second syllable is pronounced with a short ‘i’ sound /ɪ/. The final syllable has a soft ‘g’ sound /ən/. The spelling of this word is derived from the Irish language, where Costigan means "son of the house".
Costigan is a noun that refers to a surname of Irish origin. It is commonly used as a family name and is occasionally used as a given name as well. Although the exact meaning or etymology behind "Costigan" is unclear, it is believed to have originated from the Gaelic phrase "Mac Oisteagáin," which translates to "son of Oisteagán." Oisteagán, in turn, is viewed as a diminutive form of the name "Oistín," meaning "Augustine" in English.
As a surname, Costigan is commonly found amongst Irish families and is often indicative of their ancestral heritage. It carries a sense of Irish cultural identity and signifies a connection to Ireland's rich historical and genealogical roots. Individuals with the surname Costigan may have ancestors who hailed from specific regions or counties in Ireland, such as County Tipperary, Waterford, Wicklow, or Kilkenny.
Given the prominence of this surname in Irish history and culture, Costigan may also be used as a character name in literature, films, or other fictional works depicting Irish themes. The use of the name Costigan in such contexts can often evoke a sense of Irishness and contribute to the comprehensive portrayal of Irish heritage and tradition.
